The guide bearing cap, code 11.01254-0169-1.E, is a variant designed to meet specific installation or revision requirements within the MAN L21/31 engine. Functionally identical in purpose to other guide bearing caps, it plays a crucial role in fixing and stabilizing bearing or guide components, ensuring precise positioning and consistent clearances. Its robust construction allows it to withstand cyclic loads, thermal expansion, and engine vibrations, helping preserve crankshaft alignment and overall mechanical integrity during long-term operation.